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Rate and Timing of Glyphosate Application to Control Caucasian Old World Bluestem (Bothriochloa bladhii)

Published online by Cambridge University Press:  20 January 2017

Keith R. Harmoney ,
Phillip W. Stahlman ,
Patrick W. Geier  and
Karen R. Hickman
Keith R. Harmoney*
Affiliation:
Western Kansas Agricultural Research Center, Kansas State University, Hays, KS 67601
Phillip W. Stahlman
Affiliation:
Western Kansas Agricultural Research Center, Kansas State University, Hays, KS 67601
Patrick W. Geier
Affiliation:
Western Kansas Agricultural Research Center, Kansas State University, Hays, KS 67601
Karen R. Hickman
Affiliation:
Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK 74078
*
Corresponding author's E-mail: [email protected]
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Abstract

Caucasian Old World bluestem (OWB) has escaped into native rangelands and could have unknown effects on distribution, utilization, growth, and reproduction of native plant and animal species. This trial was established to determine the rate and timing of glyphosate application that will provide the greatest OWB suppression. Treatments included glyphosate applied early at the five-leaf stage of growth with 1.12, 2.24, or 3.36 kg glyphosate ai ha−1 (1, 2, or 3 lb ai ac−1), sequential application with an early glyphosate application of 1.12, 2.24, or 3.36 kg ha−1 followed by a second application 8 wk later of either 1.12 or 2.24 kg ha−1, and a late-only application of 1.12, 2.24, or 3.36 kg ha−1. Sequential glyphosate applications with at least one of the early or late applications being 2.24 kg ha−1 or more reduced OWB frequencies from over 87% to below 30% each year. During a moist year, all sequential application treatments reduced OWB frequency to 12% or less. Frequency of OWB the year after application was directly related (r2 = 0.91) to the total amount of glyphosate applied during dry conditions. Seed heads were absent or nearly absent in all sequential application treatments, with the exception of glyphosate at 1.12 kg ha−1 applied early and late during the dry season. Sequential application of glyphosate that includes one treatment either early or late of 2.24 or 3.36 kg ha−1 appears to be the most effective treatment to reduce established OWB during dry years. During years of adequate moisture, a single late application of 2.24 or 3.36 kg ha−1 or sequential applications with 1.12 kg ha−1 at each application is as adequate as sequential applications with greater rates for reducing OWB frequency and achieving OWB control.

Keywords

GlyphosateCaucasian Old World bluestem, Bothriochloa bladhii (Retz) S. T. Blake BOTBLDry matter yieldforagefrequencyinvasiveseed head density
Type
Research
Information
Invasive Plant Science and Management , Volume 3 , Issue 3 , November 2010 , pp. 310 - 314
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Coyne, P. I. and Bradford, J. A. 1985. Morphology and growth in seedlings of several 4-carbon pathway perennial grasses. J. Range Manage 38:504–512.Google Scholar
Eerens, H. and Mellsop, J. 2008. Matching herbicide application rates with the environmental conditions and growth stages of nodding thistle (Carduus nutans) and hairy buttercup (Ranunculus sardous) in pastures. Weed Biol. Manage 8:209–214.Google Scholar
Gabbard, B. L. and Fowler, N. L. 2007. Wide ecological amplitude of a diversity-reducing invasive grass. Biological Invasions 9:149–160.Google Scholar
Harmoney, K. R., Stahlman, P. W., and Hickman, K. R. 2004. Herbicide effects on established yellow Old World bluestem (Bothriochloa ischaemum). Weed Technol 18:545–550.Google Scholar
Harmoney, K. R., Stahlman, P. W., and Hickman, K. R. 2007. Suppression of Caucasian Old World bluestem with split application of herbicides. Weed Technol 21:573–577.Google Scholar
Hickman, K. R., Farley, G. H., Channell, R., and Steier, J. E. 2006. Effects of Old World bluestem (Bothriochloa ischaemum) on food availability and avian community composition within the mixed-grass prairie. Southwest. Nat 51:524–530.Google Scholar
Klevorn, T. B. and Wyse, D. L. 1984. Effect of soil temperature and moisture on glyphosate and photoassimilate distribution in quackgrass (Agropyron repens). Weed Sci 32:402–407.Google Scholar
Launchbaugh, J. L. 1971. Upland Seeded Pastures Compared for Grazing Steers at Hays, Kansas. Manhattan, KS Kansas Agricultural Experiment Station Bull. 548 p.Google Scholar
Lodge, D. M. 1993. Biological invasions: lessons for ecology. Trends Ecol. Evol 8:133–137.Google Scholar
Sakai, A., Allendorf, F., Holt, J., et al. 2001. The population biology of invasive species. Ann. Rev. Ecol. Syst 32:305–332.Google Scholar
Sammon, J. G. and Wilkins, K. T. 2005. Effects of an invasive grass (Bothriochloa ischaemum) on a grassland rodent community. Tex. J. Sci 57:371–382.Google Scholar
SAS 1989. SAS/STAT User's Guide. Version 6, 4th ed. Volume 2. Cary, NC SAS Institute Inc. 846 p.Google Scholar
Schmidt, C., Hickman, K., Channell, R., Harmoney, K., and Stark, W. 2008. Competitive abilities of native grasses and non-native (Bothriochloa spp.) grasses. Plant Ecol 197:69–80.Google Scholar
Simberloff, D. 1996. Impacts of introduced species in the United States. Consequences. Nat. Implic. Environ. Change 2:13–22.Google Scholar
Vitousek, P. M. 1990. Biological invasions and ecosystem processes: towards an integration of population biology and ecosystem studies. Oikos 57:7–13.Google Scholar
Vogel, K. P. and Masters, R. A. 2001. Frequency grid—a simple tool for measuring grassland establishment. J. Range Manage 54:653–655.Google Scholar
Wilson, S. D. and Shay, J. M. 1990. Competition, fire, and nutrients in a mixed-grass prairie. Ecology 71:1959–1967.Google Scholar